is a Japanese kickboxer, currently competing in the super lightweight division of Krush. A professional competitor since 1999, he is the former Krush Super Featherweight champion, the former AJKF Lightweight champion and the 2003 AJKF Lightweight Tournament winner.
Kickboxing career
AJKF
AJFK lightweight champion
Otsuki challenged the reigning AJKF lightweight champion Aou Hayashi at AJKF 2003 1th.BOUT - KICK ENERGY on January 4, 2003. He was awarded a third-round technical knockout, after knocking Hayashi down three times by the 1:32 minute mark.
After capturing the AJKF lightweight title, Otsuki participated in the 2003 AJKF lightweight tournament. Otsuki was booked to face Takahito Fujimasa in the quarterfinals, which were held on March 8, 2003. He won the fight by a first-round knockout. Otsuki faced Susumu Daigūji in the penultimate bout of the tournament on May 23, 2003. He won fight by a third-round knockout. Otsuki advanced to the tournament finals, held on the same day, where he faced Tsogto Amara. He won the fight by a second-round technical knockout.
Otsuki faced Andrea Ronchi in a non-title bout at AJKF 2003 KNOCK DOWN on September 27, 2003. Ronchi retired from the fight at the end of the fourth round.
Otsuki made his first AJKF lightweight title defense against Takahito Fujimasa at AJKF 2004 Wilderness on January 4, 2004. He won the fight by a first-round knockout, stopping Fujimasa with a spinning backfist near the end of the opening round. Otsuki vacated the title on September 25, 2004.
Post title reign
Otsuki challenged the reigning WPKC World muay thai champion Satoshi Kobayashi at AJKF Survivor on January 4, 2005. He won the fight by a third-round knockout.
Otsuki faced Masami Yamamoto at AJKF Solid Fist on November 12, 2006. He won the fight by unanimous decision, with scores of 30–28, 30–28 and 30–29. Otsuki next faced Jon Sung Min at AJKF New Year Kick Festival 2007 on January 4, 2007. He won the fight by a first-round knockout.
Otsuki's two-fight winning streak was snapped by Hiromasa Masuda at AJKF: Departure Norainu FINAL on March 9, 2007, who beat him by unanimous decision. Otsuki suffered his second consecutive loss on June 17, 2007, as Kupee Wor.Steera beat him by unanimous decision at AJKF's Thailand event.
Otsuki was booked to face Kanongsuk Weerasakreck in the quarterfinal bout of the AJKF 60kg tournament, which was held on August 25, 2007. He won the fight by a fifth-round technical knockout. Otsuki advanced to the semifinals, held on October 25, 2007, where he faced Naoki Maeda. He won the fight by unanimous decision. Otsuki fought Masahiro Yamamoto in the tournament finals, which were held on the same day. He lost the fight by unanimous decision.
Krush
Early Krush career
Otsuki made his K-1 promotional debut against David Douge at K-1 WORLD MAX 2008 World Championship Tournament FINAL 8 on July 7, 2008. He won the fight by a third-round knockout. Otsuki made his second K-1 appearance against Ryuji Kajiwara at K-1 World MAX 2008 World Championship Tournament Final on October 1, 2008. He won the fight by unanimous decision, with scores of 30–28, 29–28 and 30–29.
Otsuki made his Krush debut against Naoki Ishikawa at Krush 2 on March 14, 2009. He won the fight by a third-round knockout, flooring Ishikawa with a right hook late in the round. After winning his promotional debut, Otsuki was scheduled to participate in the 2009 Krush lightweight grand prix. Although he beat Hiroshi Iwakiri by a first-round technical knockout in the opening round of the tournament, he lost a majority decision to Masahiro Yamamoto in the quarterfinals, which were held on the same day.
Otsuki faced Akihiro Kuroda at Krush × Survivor on March 13, 2010. He won the fight by unanimous decision, with scores of 30–28, 30–28 and 30–29. Otsuki was unable to build on this victory however, as he lost a unanimous decision to Yoshimichi Matsumoto on May 2, 2010.
Otsuki returned from a three-year absence from the sport to face Taishi Hiratsuka at Krush 34 on November 10, 2013. He won the fight by a first-round knockout. Otsuki was next booked to face Tomohiro Oikawa in Oikawa's retirement fight at SHOOT BOXING 2013 on December 23, 2013. He won the fight by unanimous decision, after two extra rounds were contested. Otsuki extended his winning streak to three straight fights at Krush 37 on April 1, 2014, as he beat Junpei Aotsu by split decision, after an extra round was contested.